Simulation of Routing in NAT, PAT and Inter_VLAN Networks

Several techniques can make the size of the routing table manageable and a couple of these will be briefly considered in this paper. Next-hop: routing technique reduces the contents of the routing table, the table holds only the information that leads to the next hop instead of holding information about the complete route. Network specific routing technique reduces the routing table and simplifies the searching process. Instead of having an entry for every host connected to the same physical network, only one entry is used to define the address of the network itself. All hosts connected to the same network are treated as one entity. In this paper three types of routing protocols were simulated, Network Addressing Translation (NAT), Port Address Translation (PAT) and Inter-VLAN routing.